How much economic growth reaches the middle class? Figure A2 shows median household income by GDP per capita from 1979 to 2013.

Figure A2. Median household income by GDP per capitaThe data points are years. 1979-2013. The lines are linear regression lines. Household incomes are posttransfer-posttax, adjusted for household size and then rescaled to reflect a three-person household. Household incomes and GDP per capita are adjusted for inflation and converted to US dollars using purchasing power parities. “k” = thousand. Data sources: OECD; Luxembourg Income Study.